1 EXHIBIT 10.43 FLEET BANK August 24, 1995 Mr. Thomas A. St. Germain Chief Financial Officer Summa Four, Inc. 25 Sundial Avenue Manchester, NH 03103 Dear Tom: Reference is hereby made to the Letter Agreement (the "Agreement") executed by and between...Letter Agreement • June 19th, 1998 • Summa Four Inc • Telephone & telegraph apparatus
